This volume is an updated and revised version of the General Course on Public International Law delivered by the Author at The Hague Academy of International Law in 2005. Professor Cançado Trindade, Doctor honoris causa of seven Latin American Universities in distinct countries, was for many years Judge of the Inter-American Court of Human Rights, and President of that Court for half a decade (1999-2004). He is currently Judge of the International Court of Justice; he is also Member of the Curatorium of The Hague Academy of International Law, as well as of the Institut de Droit International, and of the Brazilian Academy of Juridical Letters.